<template>
  <div>
    <div>
      <el-input style="width: 200px" placeholder="查询标题" v-model="title"/>
      <el-button type="success" style="margin-left: 10px" @click="load(1)">查询</el-button>
      <el-button type="warning" @click="reset">重置</el-button>
    </div>
    <div style="margin: 10px">
      <el-button type="primary" plain @click="handleAdd">新增</el-button>
      <el-button type="danger"  plain @click="delBatch">批量删除</el-button>
    </div>
    <el-table :data="tableData" stripe :header-cell-style="{ backgroundColor: 'aliceblue', color: '#666'}" @selection-change="handleSelectionChange">
      <el-table-column type="selection" width="55" align="center"/>
      <el-table-column label="序号" prop="id" width="70" align="center"/>
      <el-table-column label="标题" prop="title" align="center"/>
      <el-table-column label="内容" prop="content" align="center"/>
      <el-table-column label="发布人" prop="user" align="center"/>
      <el-table-column label="发布时间" prop="time" align="center"/>
      <el-table-column label="是否公开" align="center">
        <template v-slot="scope">
          <el-switch v-model="scope.row.open" @change="changeOpen(scope.row)"/>
        </template>
      </el-table-column>
      <el-table-column label="操作" align="center" width="180px">
        <template v-slot="scope">
          <el-button size="mini" type="primary" plain @click="handleEdit(scope.row)">编辑</el-button>
          <el-button size="mini" type="danger" plain @click="del(scope.row.id)">删除</el-button>
        </template>
      </el-table-column>
    </el-table>

    <div style="margin: 10px 0">
      <el-pagination
          background
          @current-change="handleCurrentChange"
          :current-page="pageNum"
          :page-size="pageSize"
          layout="total, prev, pager, next"
          :total="total">
      </el-pagination>
    </div>

    <el-dialog title="公告信息" :visible.sync="formVisible" width="40%" :close-on-click-modal="false">
      <el-form :model="form" label-width="80px" style="margin-right: 20px" :rules="rules" ref="formRef">

        <el-form-item label="标题" prop="title">
          <el-input v-model="form.title" placeholder="标题"/>
        </el-form-item>
        <el-form-item label="内容" prop="content">
          <el-input type="textarea" v-model="form.content" placeholder="内容"/>
        </el-form-item>
      </el-form>

      <div slot="footer" class="dialog-footer">
        <el-button @click="formVisible = false">取 消</el-button>
        <el-button type="primary" @click="save">确 定</el-button>
      </div>
    </el-dialog>
    
  </div>
</template>

<script>
  export default {
    name: "Notice",
    data() {
      return {
        tableData: [],  // 所有数据
        pageNum: 1,  // 当前页
        pageSize: 5,  // 没页显示个数
        username: '',
        title: '',
        total: 0,
        formVisible: false,
        form: {},
        user: JSON.parse(localStorage.getItem('honey-user') || '{}'),
        rules: {
          title: [
            { required: true, message: '请输入标题', trigger: 'blur'},
          ],
          content: [
            { required: true, message: '请输入内容', trigger: 'blur'},
          ],
        },
        ids: [],
        content: '',
      }
    },
    created(){
      this.load()
    },
    methods: {
      changeOpen(form) {
        // 调用更新接口 更新到数据库
        this.form = JSON.parse(JSON.stringify(form))
        this.sendSaveRequest()
      },
      delBatch() {
        if (!this.ids.length) {
          this.$message.warning("请选择数据")
          return
        }
        this.$confirm("您确认批量删除数据吗？", "确认删除",{type: "warning"}).then(response => {
          this.$request.delete('/notice/delete/batch', {data: this.ids} ).then(res => {
            if (res.code === '200') { // 操作成功
              this.$message.success("操作成功")
              this.load(1)
            } else {
              this.$message.error(res.msg)  // 弹出错误信息
            }
          })
        })
      },
      handleSelectionChange(rows) {  // 当前选中的所有数据
        this.ids = rows.map(v => v.id)
      },
      del(id) {
        this.$confirm('确认删除吗？','确认删除',{type: "warning"}).then(response => {
          this.$request.delete('/notice/delete/' + id ).then(res => {
            if (res.code === '200') { // 操作成功
              this.$message.success("操作成功")
              this.load(1)
            } else {
              this.$message.error(res.msg)  // 弹出错误信息
            }
          })
        }).catch(() => {})
      },
      handleEdit(row) {  // 编辑数据
        this.form = JSON.parse(JSON.stringify(row)) // 给 form 对象赋值,注意要深拷贝数据
        this.formVisible = true // 打开弹窗
      },
      handleAdd() {  // 新增数据
        this.form = {}  // 新增数据的时候清空数据
        this.formVisible = true // 打开弹窗
      },
      save() { // 保存按钮触发逻辑 触发新增或更新
        this.$refs.formRef.validate((valid) => {
          if (valid) {
            this.sendSaveRequest()
          }
        })
      },
      sendSaveRequest() {
        this.$request({
          url: this.form.id ? '/notice/update' : '/notice/add',
          method: this.form.id ? 'PUT' : 'POST',
          data: this.form
        }).then(res => {
          if (res.code === '200') { // 成功保存
            this.$message.success("保存成功")
            this.load(1)
            this.formVisible = false // 关闭弹窗
          } else {
            this.$message.error(res.msg)  // 弹出错误信息
          }
        })
      },
      reset() {
        this.title = '',
        this.load()
      },
      load(pageNum) {
        if (pageNum) this.pageNum = pageNum
        this.$request.get('/notice/selectByPage', {
          params: {
            pageNum: this.pageNum,
            pageSize: this.pageSize,
            title: this.title,
          }
        }).then(res => {
          this.tableData = res.data.records
          this.total = res.data.total
        })
      },
      handleCurrentChange(pageNum) {
        this.load(pageNum)
      },
    }
  }
</script>

<style>
.el-tooltip__popper{
  max-width: 200px !important;
}
</style>